Hi all,
I have an application coming up where I have a motor that runs forward or backward to adjust the linear position of a machine component. Position feedback is via an encoder wired to a 1734-SSI module. Previous iterations of this machine have just used a standard VSD, done a simple position compare, given it a speed and a direction and stopped when it's within a specific tolerance window. The adjustment is very slow, and the precision requirements are not unusually high, so this approach works just fine.
However for reasons unimportant to this question, I'm using Powerflex 527's on all motors for this project, which are motion class drives, and I had the thought that if I could turn this into a position loop, the positioning would become remarkably simple. Basically I'd just be using an MAM to send the required position to the axis, and the motion planner would do all the work of determining speed/direction/start/stop and tolerance windows, instead of me coding it in logic.
I have already determined that a PF527 can't accept an SSI encoder, and it's unfortunately too late in the process to change the type of encoder. So I can't just wire the encoder to the drive and do it the "right" way.
What I'm wondering is, is there a "creative" way to have the position from a 1734-SSI module effectively become the motor feedback for a position loop axis using a powerflex 527?
I have an application coming up where I have a motor that runs forward or backward to adjust the linear position of a machine component. Position feedback is via an encoder wired to a 1734-SSI module. Previous iterations of this machine have just used a standard VSD, done a simple position compare, given it a speed and a direction and stopped when it's within a specific tolerance window. The adjustment is very slow, and the precision requirements are not unusually high, so this approach works just fine.
However for reasons unimportant to this question, I'm using Powerflex 527's on all motors for this project, which are motion class drives, and I had the thought that if I could turn this into a position loop, the positioning would become remarkably simple. Basically I'd just be using an MAM to send the required position to the axis, and the motion planner would do all the work of determining speed/direction/start/stop and tolerance windows, instead of me coding it in logic.
I have already determined that a PF527 can't accept an SSI encoder, and it's unfortunately too late in the process to change the type of encoder. So I can't just wire the encoder to the drive and do it the "right" way.
What I'm wondering is, is there a "creative" way to have the position from a 1734-SSI module effectively become the motor feedback for a position loop axis using a powerflex 527?